1. Reduced estrogen ovulation inhibitor in acne therapy. Double-blind study comparing Diane-35 to Diane;Aydinlik;Fortschritte der Medizin,1986
2. Bayer Schering Pharma AG GA YAZ ACNE in China Phase III http://clinicaltrials.gov/ct2/show/NCT00818519
3. Cyproterone acetate versus levonorgestrel combined with ethinyl estradiol in the treatment of acne. Results of a multicenter study;Carlborg;Acta Obstetricia et Gynecologica Scandinavica,1986
4. Effects on acne of two oral contraceptives containing desogestrel and cyproterone acetate;Charoenvisal;International Journal of Fertility and Menopausal Studies,1996
5. The effects of CTR-24, a biphasic oral contraceptive combination, compared to Diane-35 in women with acne;Dieben;Contraception,1994